Catalog

SCANIA 2357532 AIR SPRING

SCANIA 2357532 AIR SPRING

Product Specifications

Product quality
OEM Equivalent Grade
starstarstar
Wholesale price USD $47.78
Wholesale price CNY ¥324
bolt MOQ (Minimal order)
1 pcs
local_shipping Production time
40-130 days
package_2 Shipping Weight: —
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SCANIA 2357532
Overview & Operating Principle
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The AIR SPRING is a pressurised rubber-and-fabric bellows element that replaces the conventional steel coil spring in an air suspension system, supporting the vehicle's corner weight on a column of compressed air supplied and regulated by the onboard compressor and control valve block. The air spring consists of a multi-ply reinforced rubber sleeve — typically two or three plies of nylon or polyester cord embedded in a synthetic rubber compound — crimped or clamped between an upper mounting piston and a lower rolling piston or cup that travels inside the sleeve as the suspension moves through its stroke. Inflation pressure is continuously adjusted by the suspension control module in response to ride height sensor signals, maintaining a constant vehicle ride height regardless of load variation and allowing the spring rate to be tuned electronically for comfort or sport modes. Operating pressures range from 4–8 bar at standard ride height to 12–16 bar on lowered sport settings depending on the system design.

This unit — SCANIA 2357532 — is manufactured to OEM-equivalent specifications: sleeve ply count and cord angle, rubber compound tensile strength and ozone resistance rating, upper and lower piston geometry and sealing bead dimensions, air fitting port size and thread, and ride height travel range are matched to the original part. Supplied as a direct replacement for standard fitment. Available wholesale from 47.78 USD, MOQ 1 pcs, production lead time 40-130 days.

Air spring sleeves fail through ozone and UV degradation of the outer rubber layer producing surface cracking that progressively penetrates the cord plies, fatigue cracking at the crimp bead where the sleeve is clamped to the piston under repeated high-cycle flexing, and abrasion damage from road debris contacting the sleeve during full compression. A sleeve that has developed a slow leak forces the compressor to cycle more frequently than its design duty cycle, overheating the compressor motor and dramatically shortening its service life — a failed air spring that is not replaced promptly will cause compressor failure as a secondary consequence, converting a single component replacement into a significantly more expensive repair.

Symptoms & Diagnostics
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Vehicle sitting noticeably lower on one corner after overnight parking — the air spring at that corner is leaking slowly; the compressor refills the spring during driving but cannot maintain pressure when the system is inactive; apply soapy water to the sleeve surface and air fitting with the system pressurised to locate the leak source precisely.
Air suspension warning light and fault code indicating a specific corner is out of ride height range — the control module has detected that the compressor cannot bring the affected corner to the target ride height within the specified time; this indicates either a significant air spring leak or a blocked air line to that corner.
Compressor running continuously or cycling abnormally frequently during normal driving — a slow sleeve leak is causing constant pressure loss that the compressor must continuously compensate for; the compressor is operating beyond its rated duty cycle and will overheat and fail if the air spring is not replaced promptly.
Harsh, jarring ride quality on one corner with no warning light — the air spring sleeve has a slow leak that reduces pressure to near atmospheric between compressor cycles, causing the vehicle to ride on the jounce bumper at the affected corner; the ride height sensor may not trigger a warning if the drop is gradual and the compressor partially compensates.
Visible surface cracking, crazing, or abrasion damage on the rubber sleeve visible on inspection with the wheel removed — ozone degradation or road debris contact has compromised the outer rubber layer; surface cracking that has penetrated to the cord plies will develop into a pressure leak under the next inflation cycle and should be replaced proactively.
Vehicle unable to raise to maximum or lower to minimum ride height on command despite the compressor operating — the air spring sleeve has lost flexibility at its travel extremes due to rubber hardening from age and cold, preventing the piston from moving through its full stroke range; the sleeve must be replaced to restore full suspension travel.
Logistics & Customs
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International HS Code
4016.99
EAEU Customs Code (TN VED)
4016 99 970 9
Typical Net Weight
Country of Manufacture
China
Standard MOQ
1 pcs
Production Lead Time
40-130 days
Always verify the exact 8-digit or 10-digit subheading with your customs broker for the destination country, as tariff schedules and duty rates vary by jurisdiction.
Installation Tips
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  1. Use a scan tool to command the suspension to its highest ride height position and then exhaust the air spring completely before raising the vehicle — most air suspension control modules have a service or workshop mode that vents the affected corner to atmosphere; never attempt to remove an air spring under residual pressure as sudden decompression can cause serious injury. Disconnect the battery after exhausting the system to prevent the module from attempting to re-inflate during the repair.
  2. Support the vehicle body independently of the suspension on chassis stands before allowing the suspension to drop — on fully independent air suspension systems the control arm will drop its full travel distance when the air spring is exhausted and the wheel removed, placing stress on brake hoses, ABS sensor wires, and driveshaft CV joints; support the control arm with a workshop jack set to just below the unloaded position.
  3. Disconnect the air line from the spring fitting before unbolting the spring from its mounts — press the collet release collar on the push-fit air fitting and pull the line free; cap the disconnected air line immediately with a blanking plug to prevent moisture and contamination from entering the air system. Moisture in the air lines corrodes the compressor valves and valve block solenoids, causing expensive secondary failures.
  4. Note the orientation of the upper mounting plate and lower piston relative to the suspension arm and body before removing the air spring — air spring upper mounts typically have a specific clocking position relative to the chassis mounting points; an incorrectly oriented spring will place the sleeve in contact with adjacent components during suspension travel, causing abrasion failure.
  5. Inspect the shock absorber or strut inside the air spring where applicable — on combined air spring and damper assemblies (air struts), the damper must be inspected for oil leakage and shaft seal condition; fitting a new air spring to a damper with a leaking shaft seal will contaminate the inside of the new sleeve with damper oil, dramatically accelerating rubber degradation.
  6. Install the new AIR SPRING (SCANIA 2357532), reconnect the air line until the push-fit collet locks positively, reconnect the battery, use the scan tool to inflate the corner to the standard ride height, apply soapy water to all air fittings and the sleeve surface to verify no leaks under pressure, then perform a full suspension calibration or ride height relearn as specified by the OEM procedure for this vehicle before returning it to service.
Tools: OBD-II scanner with air suspension service mode, chassis stands, workshop jack, push-fit air line blanking plugs, soapy water for leak detection, torque wrench for mounting fasteners.
Frequently Asked Questions
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Should air springs be replaced in axle pairs or only the failed unit?
Replacing the failed spring alone is acceptable if the opposite spring on the same axle is inspected and confirmed to be free of surface cracking, bead damage, and slow leakage. However, on vehicles above 100,000 km or 8–10 years of age, both springs on the same axle are typically at the same stage of rubber fatigue — replacing both simultaneously during the same service access eliminates a repeat suspension disassembly within a short period and ensures both corners have matching spring compliance and ride height response. ok.parts supplies air springs individually and in axle pairs at wholesale MOQ from 47.78 USD per unit.
Is ride height calibration or suspension relearn required after fitting a new air spring?
Yes, on all vehicles with electronically controlled air suspension a ride height calibration or relearn procedure is required after any air spring replacement. The suspension control module stores ride height reference values for each corner based on the ride height sensor position at a known pressure — after a spring replacement the mechanical relationship between the spring height and the sensor output changes, requiring the module to relearn the reference values. The procedure is performed via the manufacturer's scan tool software and typically involves placing the vehicle on a level surface, inflating all springs to standard pressure, and commanding a calibration routine that stores the new reference values. Skipping this step causes incorrect ride height adjustment and may trigger persistent fault codes.
How does the OEM-equivalent aftermarket unit compare to the genuine OEM part?
OEM-equivalent units in this catalogue replicate the current OEM design geometry and material specification. Quality is verified against OEM cross-reference data. When ordering in bulk, confirm with our team that the specification matches the latest OEM revision for your application.
Is white-label or custom packaging available for wholesale orders?
Yes. ok.parts works directly with the manufacturing facility and can accommodate neutral white-label packaging or fully branded packaging with your company logo, part numbers, and barcode. Minimum order quantities and lead times for custom packaging may differ from standard stock. Contact the team via the inquiry form to discuss your specific requirements.
Frequently Replaced Together
PartReason for Combined Replacement
Air Suspension Compressor
OEM ref. varies by system		A slow air spring leak forces the compressor to run beyond its rated duty cycle, overheating the motor windings and valve assembly. If the compressor has been running abnormally frequently for weeks or months before the air spring failure was diagnosed, it will have accumulated heat damage that shortens its remaining service life significantly. Inspect compressor run time patterns in the fault code history — if the module has logged repeated compressor overtime events, replacing the compressor simultaneously with the spring avoids a compressor failure shortly after the spring repair.
Ride Height Sensor
OEM ref. varies by corner position		The ride height sensor linkage arm at the affected corner is fully accessible during air spring removal and should be inspected for wear at its ball joints and corrosion of the sensor body. A ride height sensor with worn linkage ball joints produces erratic height readings that cause the control module to continuously hunt for the target ride height, overworking the compressor and valve block even with a new air spring fitted.
Air Line and Push-Fit Fittings
Nylon tubing, 6–8 mm, application-specific routing		The nylon air lines connecting the valve block to each spring are routed along the chassis and suspension arms where they are subject to chafing, UV degradation, and fitting corrosion. A hairline crack in the air line adjacent to the spring will produce the same slow leak symptom as a failed spring. Inspect the full line routing from the spring fitting to the valve block before completing the repair — a leaking air line discovered after the spring has been replaced and the system pressurised requires a repeat system exhaust and partial disassembly to address.